Another dash question...

In the spz-8000 manual, it indicates that the Standby will cancel the flight director...will the standby button also turnoff the autopilot? I have tried this on a dash 8 300 simulator on FSX, and flight director does cancel, and the autopilot also cancels, but does that necessarily mean the autopilot is off? Y/D continues to function. Any help is appreciated.

thanks